The full file in .MP4 format with H.264 Video and AAC audio stream can be
downloaded here
(right-click -> "Save As ...")

This website uses H264 pseudo video streaming technology by
CodeShop.
Video on this website is rendered by
FlowPlayer's GPLv3 version
with a custom patch that is available
here.
The video was recorded by SonicFoundry and made available
by Georg
Lippold.